[Farmall] Sector Gears

Wed Jul 21 06:28:01 PDT 2004

Don't have any experience with this product, but check out the following:

http://www.rosemill.com/heat_treating.htm

They even have a "How -To" link that explains how it works.

Carl Szabelski

                    "soffiler at myeastern.com"                                                                                               
                    <soffiler                             To:     Farmall/IHC mailing list <farmall at lists.antique-tractor.com>             
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                    farmall-bounces at lists.antique-t       Subject:     Re: [Farmall] Sector Gears                                          
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                    07/21/2004 08:40 AM                                                                                                    
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Hey George (& Mark):

How about heating it up, then packing it in charcoal while
still very hot and letting it cool very slowly?  That's my
understanding of how our vendor case-hardens production
parts here at work.  We routinely case-harden 12L14 although
it's not terribly well controlled it seems to work
reasonably well.

Best regards,
Steve O.

From: "George Willer" <gwill at toast.net>

----- Original Message Follows -----
> Mark,
>
> Unless you used some kind of special welding rod, the
> welds won't contain enough carbon to respond to heat
> treatment.  One thing you could maybe do... heat the
> sector gear with a torch to a bright red and hold it there
> for a while with a smoky flame.  The hot steel will absorb
> some carbon.  That will add enough carbon to the surface
> to harden when quenched for a crude form of case
> hardening.  Do it after all your shaping is done, since
> the hardening will be very shallow... depending on time.
> Drawing the temper should not be necessary, since the core
> will remain soft.
>
> George Willer
>
> ----- Original Message -----
> From: "Mark Sargent" <bucksargent1 at yahoo.com>
> To: <farmall at lists.antique-tractor.com>
> Sent: Tuesday, July 20, 2004 4:09 PM
> Subject: [Farmall] Sector Gears
>
>
> > Farmall guys-
> >
> > Does anyone know of a source for M Farmall Sector
> > gears?
> > I suspect if there are - I can't afford them-- but let
> > me know- I'd appreciate it.  I bought the Upper
> > bolster OH kit from C & G - but I don't want to put it
> > back together - and still have the 'speed wobble' on
> > the fastest M in western Ohio- due to the sector gear
> > being worn.
> >
> > In the meantime I'll  continue to file the 'welds' - I
> > used to fill the 'clatter' indentations-- on the one I
> > took off.   The welds are softer than the gear- so I
> > suspect I better do a home imitation of heat treat on
> > the teeth when I'm done-   Has anyone done this?-- any
> > words of wisdom are appreciated!
> > Thanks
> > Mark Sargent
> >
> >
> >
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